Analysis of metallic components in zinc phosphate films using electron spin resonance and X-ray fluorescence

Satô, Noboru; Minami, Tatsuo; Kono, Hirofumi

doi:10.1016/0257-8972(89)90118-7

Cited by 17 publications

(4 citation statements)

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“…To further study local structural phase over Ni 2+ ions in the fluoride crystalline hosts, EPR spectroscopy was carried out and the results are shown in Figure 5. Herein we begin with crystalline ZnF 2 (raw material) that shows a broad EPR signal at 3200‐3500 G due to inhomogeneous distribution of Zn‐type TMIs 40,41 . The 15KF‐15ZnF 2 ‐70SiO 2 GC (KZS‐GC without Ni, see SI Figure ) sample embedded with ZnF 2 NCs shows similar shape to that of ZnF 2 crystallites.…”

Section: Resultsmentioning

confidence: 99%

“…Herein we begin with crystalline ZnF 2 (raw material) that shows a broad EPR signal at 3200-3500 G due to inhomogeneous distribution of Zn-type TMIs. 40,41 The 15KF-15ZnF 2 -70SiO 2 GC (KZS-GC without Ni, see SI Figure S4) sample embedded with ZnF 2 NCs shows similar shape to that of ZnF 2 crystallites. Upon Ni 2+ doping, the spectrum of KZSN70-PG shows an anisotropic g-factor (g =2.001) for partially coordinated Ni ions departing from the free electron, 42,43 which is possibly generated by the compressive or elongated distortions of ZnF 2 lattice.…”

Section: Ni 2+ Ionsmentioning

confidence: 99%

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Structural phase evolved Ni²⁺‐doped fluoride nanocrystals in KF−ZnF₂−SiO₂ glass‐ceramics

et al. 2020

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Incorporation of transition-metal ions (TMIs) in the precipitated nanocrystals (NCs) of glass-ceramics (GCs) greatly improves the photonic properties of these materials. The crystal field and coordination of TMIs show fingerprints for spectroscopic characterization. However, it is difficult to probe the effect of the host NCs' structural phase on doped TMIs' d-d orbitals. Herein, ZnF 2 :Ni and KZnF 3 :Ni based on controllable crystallization in KF-ZnF 2-SiO 2 :Ni 2+ GCs were taken as model systems. Compared to ZnF 2 , perovskite-type KZnF 3 has higher binding energy Zn-F bonds in which Ni 2+ are easier to be segregated, which makes KZnF 3 :Ni be better "excited electron trapper" due to hole localization to intra-gap Ni states. These findings contribute to the understanding and design of TMIs-doped GCs in practical applications. K E Y W O R D S band structure, binding energy, oxyfluorides, perovskite, photoluminescence 1 | INTRODUCTION Tremendous attention has been paid to optical oxyfluoride glass ceramics (GCs) because of their unique comprehensive characteristics of low phonon energy of fluoride crystals, but also favorable mechanical properties and durability of oxide glasses. In particular, through the precipitation of rare earth ions (REIs) and transition metal ions (TMIs)-doped fluoride

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Section: Resultsmentioning

confidence: 99%

Section: Ni 2+ Ionsmentioning

confidence: 99%

Structural phase evolved Ni²⁺‐doped fluoride nanocrystals in KF−ZnF₂−SiO₂ glass‐ceramics

et al. 2020

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“…The results also suggested that nickel can be replaced by niobium in zinc phosphate baths with advantageous corrosion properties of the layer formed [8]. However, there is scarce literature data on physical and chemical properties of these modified zinc phosphates [8,12,14].…”

Section: Introductionmentioning

confidence: 96%

Effect of porosity of phosphate coating on corrosion resistance of galvanized and phosphated steels Part II: Evaluation of corrosion resistance

Teixeira¹,

Alvarenga²,

Vasconcelos

et al. 2011

Materials & Corrosion

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The effect of porosity of phosphate coatings on the corrosion resistance of ungalvanized (UG), electrogalvanized, and hot dip galvanized steels is evaluated in this study. The corrosion resistance of phosphatized and painted steel is related to the integrity and continuity of phosphate and paint layers, and pores in the phosphate layer affect the corrosion resistance of material. The porosity of the phosphate coating was evaluated by using the cathodic polarization electrochemical test. To evaluate the corrosion resistance of the phosphatized and painted steels, they were submitted to accelerated corrosion tests. As was expected, the creepback from the scribe increased with the increase in porosity. This behavior was evident for UG steel, but less evident for galvanized steels due to cathodic protection and/or barrier effect of the zinc coating.

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“…Studies of phosphating film now mainly was focused on the study of actual production in the production process or phosphating process improvement over the old [4][5]. But phosphorus of into film mature of mechanism also main was traditional technology in the using of phosphorus of technology of into film mechanism [6][7]. Currently the research personnel development of new phosphorus of technology was rarely, or just shallow mentioned and does not on its for in-depth system of research.…”

Section: Introductionmentioning

confidence: 99%

Mechanism of Zinc Phosphating Solution at Low Temperature

Chen

Lü

Jia

2012

AMR

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In our studied phosphating system, the morphology, chemical composition, phase and corrosion resistance of the phosphate film were characterized by EDS, AES, XRD and cathodic polarization curves. Test results indicated that the phosphate coating was made of the two kinds of Zn3(PO4)2•4H2O and Fe2Zn(PO4)2•4H2O crystals composed. On this basis, we came up the film-forming mechanism of low temperature phosphating technology.

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Analysis of metallic components in zinc phosphate films using electron spin resonance and X-ray fluorescence

Cited by 17 publications

References 3 publications

Structural phase evolved Ni²⁺‐doped fluoride nanocrystals in KF−ZnF₂−SiO₂ glass‐ceramics

Structural phase evolved Ni²⁺‐doped fluoride nanocrystals in KF−ZnF₂−SiO₂ glass‐ceramics

Effect of porosity of phosphate coating on corrosion resistance of galvanized and phosphated steels Part II: Evaluation of corrosion resistance

Mechanism of Zinc Phosphating Solution at Low Temperature

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Analysis of metallic components in zinc phosphate films using electron spin resonance and X-ray fluorescence

Cited by 17 publications

References 3 publications

Structural phase evolved Ni2+‐doped fluoride nanocrystals in KF−ZnF2−SiO2 glass‐ceramics

Structural phase evolved Ni2+‐doped fluoride nanocrystals in KF−ZnF2−SiO2 glass‐ceramics

Effect of porosity of phosphate coating on corrosion resistance of galvanized and phosphated steels Part II: Evaluation of corrosion resistance

Mechanism of Zinc Phosphating Solution at Low Temperature

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Structural phase evolved Ni²⁺‐doped fluoride nanocrystals in KF−ZnF₂−SiO₂ glass‐ceramics

Structural phase evolved Ni²⁺‐doped fluoride nanocrystals in KF−ZnF₂−SiO₂ glass‐ceramics